ipcalc is an ancient and venerable tool for manipulating IP addresses,
networks, & interfaces from shell scripts. There is a subtool in busybox,
but it does not support everything the upstream tool [1] supports.
[1] https://gitlab.com/ipcalc/ipcalc
Signed-off-by: Derrick Lyndon Pallas <derrick@meter.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
